Second-generation pressurized fluidized bed combustion cold flow model tests of Phase 2 carbonizer

Technical Report · Mon Jul 01 04:00:00 EDT 1991

OSTI ID:5790600

Shenker, J

Under US Department of Energy Contract DE-AC21-86MC21023, Foster Wheeler Development Corporation (FWDC) is developing a second-generation pressurized fulidized bed (PFB) combustion system. The second-generation system is an improvement over first-generation pressurized systems because higher gas turbine inlet temperatures, and thus greater system efficiencies can be achieved. In first-generation systems, the gas turbine operates at temperatures lower than those in the PFB combusting bed, with the latter being limited to approximately 1600{degree}F to control alkali release/gas turbine hot corrosion. The second-generation system overcomes this temperature restriction by including a carbonizer and a topping combustor in the system. The carbonizer is a PFB combustion unit that converts coal to a low-Btu fuel gas and char. The char is transferred to a PFB combustor (PFBC), where it is burned. The flue gas from the PFBC and the fuel gas from the carbonizer go to the topping combustor, where the fuel gas is burned and gas turbine inlet temperatures in excess of 2100{degree}F are generated. The PFBC can be operated with or without coal fed along with the char. Steam is generated in the PFBC, and additional coal fed to the PFBC with the char will result in more steam generation. However, excess air must be kept at a level sufficient to support combustion of the fuel gas in the topping combustor.

• Research Organization: Foster Wheeler Development Corp., Livingston, NJ (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-86MC21023
• OSTI ID: 5790600
• Report Number(s): DOE/MC/21023-3027; ON: DE91016658
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
CERAMICS
CHARS
CHEMICAL REACTIONS
COMBUSTORS
CORROSION
DESIGN
EQUIPMENT
FILTERS
FLUIDIZED-BED COMBUSTORS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GAS TURBINES
GASES
MACHINERY
PYROLYSIS PRODUCTS
STEAM
TOPPING CYCLES
TURBINES
TURBOMACHINERY